mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-24 22:20:50 +07:00
f4fa27c16b
Somehow we got the layout of the v3 superblock wrong, which causes crashes due to overindexing of the buffer_head array in statfs on large fielsystems. Cc: "Cedric Augonnet" <cedric.augonnet@gmail.com> Cc: "Daniel Aragones" <danarag@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
106 lines
2.0 KiB
C
106 lines
2.0 KiB
C
#ifndef _LINUX_MINIX_FS_H
|
|
#define _LINUX_MINIX_FS_H
|
|
|
|
#include <linux/magic.h>
|
|
|
|
/*
|
|
* The minix filesystem constants/structures
|
|
*/
|
|
|
|
/*
|
|
* Thanks to Kees J Bot for sending me the definitions of the new
|
|
* minix filesystem (aka V2) with bigger inodes and 32-bit block
|
|
* pointers.
|
|
*/
|
|
|
|
#define MINIX_ROOT_INO 1
|
|
|
|
/* Not the same as the bogus LINK_MAX in <linux/limits.h>. Oh well. */
|
|
#define MINIX_LINK_MAX 250
|
|
#define MINIX2_LINK_MAX 65530
|
|
|
|
#define MINIX_I_MAP_SLOTS 8
|
|
#define MINIX_Z_MAP_SLOTS 64
|
|
#define MINIX_VALID_FS 0x0001 /* Clean fs. */
|
|
#define MINIX_ERROR_FS 0x0002 /* fs has errors. */
|
|
|
|
#define MINIX_INODES_PER_BLOCK ((BLOCK_SIZE)/(sizeof (struct minix_inode)))
|
|
|
|
/*
|
|
* This is the original minix inode layout on disk.
|
|
* Note the 8-bit gid and atime and ctime.
|
|
*/
|
|
struct minix_inode {
|
|
__u16 i_mode;
|
|
__u16 i_uid;
|
|
__u32 i_size;
|
|
__u32 i_time;
|
|
__u8 i_gid;
|
|
__u8 i_nlinks;
|
|
__u16 i_zone[9];
|
|
};
|
|
|
|
/*
|
|
* The new minix inode has all the time entries, as well as
|
|
* long block numbers and a third indirect block (7+1+1+1
|
|
* instead of 7+1+1). Also, some previously 8-bit values are
|
|
* now 16-bit. The inode is now 64 bytes instead of 32.
|
|
*/
|
|
struct minix2_inode {
|
|
__u16 i_mode;
|
|
__u16 i_nlinks;
|
|
__u16 i_uid;
|
|
__u16 i_gid;
|
|
__u32 i_size;
|
|
__u32 i_atime;
|
|
__u32 i_mtime;
|
|
__u32 i_ctime;
|
|
__u32 i_zone[10];
|
|
};
|
|
|
|
/*
|
|
* minix super-block data on disk
|
|
*/
|
|
struct minix_super_block {
|
|
__u16 s_ninodes;
|
|
__u16 s_nzones;
|
|
__u16 s_imap_blocks;
|
|
__u16 s_zmap_blocks;
|
|
__u16 s_firstdatazone;
|
|
__u16 s_log_zone_size;
|
|
__u32 s_max_size;
|
|
__u16 s_magic;
|
|
__u16 s_state;
|
|
__u32 s_zones;
|
|
};
|
|
|
|
/*
|
|
* V3 minix super-block data on disk
|
|
*/
|
|
struct minix3_super_block {
|
|
__u32 s_ninodes;
|
|
__u16 s_pad0;
|
|
__u16 s_imap_blocks;
|
|
__u16 s_zmap_blocks;
|
|
__u16 s_firstdatazone;
|
|
__u16 s_log_zone_size;
|
|
__u16 s_pad1;
|
|
__u32 s_max_size;
|
|
__u32 s_zones;
|
|
__u16 s_magic;
|
|
__u16 s_pad2;
|
|
__u16 s_blocksize;
|
|
__u8 s_disk_version;
|
|
};
|
|
|
|
struct minix_dir_entry {
|
|
__u16 inode;
|
|
char name[0];
|
|
};
|
|
|
|
struct minix3_dir_entry {
|
|
__u32 inode;
|
|
char name[0];
|
|
};
|
|
#endif
|